Rockwell Automation Allen-Bradley CENTERLINE 2500, Instruction Manual

Page: 38 / 88

Publication 2500-IN001A-EN-P - May 2006
4-2 Installing Cable
Lugs
Verify the compatibility of wire size, type and stranding for the power lugs
furnished. Use correct lugs in all applications. Crimp compression lugs with
manufacturer recommended tools.
NOTE: Use the MCC electrical schematics and wiring diagrams to verify field
wiring connection points.
Incoming Line Lug Compartment
Top or bottom incoming line lug compartments are available. The lug selection
should be based on the size, number and type of conductor.
The following are guidelines for selecting lugs based on incoming line available
short circuit current,
I
cw
.
I
cw
</= 50,000 amperes RMS symmetrical use mechanical screw or
crimp/compression type lugs.
I
cw
> 50,000 amperes RMS symmetrical crimp / compression type lugs are
recommended.
Main Disconnect Switch
Refer to the documentation package shipped with your MCC for information
on incoming terminations.
For main disconnects, use the lugs provided.
IMPORTANT
Lugs should be installed so they are in line with each other
and proper spacing is used between phases. Hardware must
be tightened per the torque specifications. (See Table 3.1 on
page 14.)